Improvement of warming-up characteristics of potentiometric CO2 sensor by using solid reference counter electrode

Yuji Miyachi, Go Sakai, Kengo Shimanoe, Noboru Yamazoe

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A planar type CO2 sensor device using NASICON (Na+ conductor, Na3Zr2Si2PO12) thick film was attached with a glass (SiO2:Na2O:B2O 3:Al2O3 = 44:20:31:5, in molar ratio)-coated Na0.6CoO2 reference electrode to increase its feasibility under various conditions in practical. The fabricated device proved satisfactory CO2-sensing properties at steady operating temperature (450 °C) under dry and humid conditions. In the heat-cycle tests between the operating temperature and room temperature under various humid conditions, the planar device once aged, exhibited quick warm-up characteristics and well-reproducible EMF response to CO2 unless humidity was very high (e.g. 80%).

Original languageEnglish
Pages (from-to)364-367
Number of pages4
JournalSensors and Actuators, B: Chemical
Issue number1-2 SPEC. ISS.
Publication statusPublished - Jul 22 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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